>>712874095Neither, use Transcended. It's basically just a final balance patch/bug fix for the game that fixed a bunch of shit the devs never did. The gameplay otherwise remains the same.
GMDX is most interesting in terms of combat. The AI can actually utilize equipment like armor and camo, throw grenades, shoot through breakable objects, and lock down chokepoints as opposed to always banzai charging you like retards. I love all of that, it's just all the other changes I don't like.
Revision reworks a fuck ton of stuff but the big thing is that the maps are totally different. Gameplay wise, that's not always a good thing, as the original game had (usually) pretty tight level design, but Revision's levels do at least look more like real places than vanilla, which just aren't believable at all.